1# Clock controller driver configuration options 2 3# Copyright (c) 2016 Nordic Semiconductor ASA 4# SPDX-License-Identifier: Apache-2.0 5 6config CLOCK_CONTROL_NRF_FORCE_ALT 7 bool 8 depends on SOC_COMPATIBLE_NRF 9 help 10 This option can be enabled to force an alternative implementation 11 of the clock control driver. 12 13menuconfig CLOCK_CONTROL_NRF 14 bool "NRF Clock controller support" 15 depends on SOC_COMPATIBLE_NRF 16 select NRFX_CLOCK if !CLOCK_CONTROL_NRF_FORCE_ALT 17 default y 18 help 19 Enable support for the Nordic Semiconductor nRFxx series SoC clock 20 driver. 21 22if CLOCK_CONTROL_NRF 23 24config CLOCK_CONTROL_NRF_SHELL 25 bool "Shell commands" 26 depends on SHELL 27 default y if SHELL 28 29choice CLOCK_CONTROL_NRF_SOURCE 30 prompt "32KHz clock source" 31 default CLOCK_CONTROL_NRF_K32SRC_XTAL 32 33config CLOCK_CONTROL_NRF_K32SRC_RC 34 bool "RC Oscillator" 35 36config CLOCK_CONTROL_NRF_K32SRC_XTAL 37 select NRFX_CLOCK_LFXO_TWO_STAGE_ENABLED if (!SOC_SERIES_BSIM_NRFXX && \ 38 !CLOCK_CONTROL_NRF_FORCE_ALT) 39 bool "Crystal Oscillator" 40 41config CLOCK_CONTROL_NRF_K32SRC_SYNTH 42 depends on !SOC_SERIES_NRF91X 43 bool "Synthesized from HFCLK" 44 45config CLOCK_CONTROL_NRF_K32SRC_EXT_LOW_SWING 46 depends on SOC_SERIES_NRF52X 47 select NRFX_CLOCK_LFXO_TWO_STAGE_ENABLED if !CLOCK_CONTROL_NRF_FORCE_ALT 48 bool "External low swing" 49 50config CLOCK_CONTROL_NRF_K32SRC_EXT_FULL_SWING 51 depends on SOC_SERIES_NRF52X 52 select NRFX_CLOCK_LFXO_TWO_STAGE_ENABLED if !CLOCK_CONTROL_NRF_FORCE_ALT 53 bool "External full swing" 54 55endchoice 56 57config CLOCK_CONTROL_NRF_K32SRC_RC_CALIBRATION 58 bool "Enable LF clock calibration" 59 depends on !SOC_SERIES_NRF91X && CLOCK_CONTROL_NRF_K32SRC_RC 60 default y 61 help 62 If calibration is disabled when RC is used for low frequency clock then 63 accuracy of the low frequency clock will degrade. Disable on your own 64 risk. 65 66if CLOCK_CONTROL_NRF_K32SRC_RC_CALIBRATION 67 68config CLOCK_CONTROL_NRF_CALIBRATION_LF_ALWAYS_ON 69 bool "LF clock is always on" 70 default y if NRF_RTC_TIMER 71 help 72 If RTC is used as system timer then LF clock is always on and handling 73 can be simplified. 74 75config CLOCK_CONTROL_NRF_CALIBRATION_PERIOD 76 int "Calibration opportunity period in milliseconds" 77 default 4000 78 help 79 Periodically, calibration action is performed. Action includes 80 temperature measurement followed by clock calibration. Calibration may 81 be skipped if temperature change (compared to measurement of previous 82 calibration) did not exceeded CLOCK_CONTROL_NRF_CALIBRATION_TEMP_DIFF 83 and number of consecutive skips did not exceeded 84 CLOCK_CONTROL_NRF_CALIBRATION_MAX_SKIP. 85 86config CLOCK_CONTROL_NRF_CALIBRATION_MAX_SKIP 87 int "Maximum number of calibration skips" 88 default 1 89 range 0 255 90 help 91 Calibration is skipped when temperature change since last calibration 92 was less than configured threshold. If number of consecutive skips 93 reaches configured value then calibration is performed 94 unconditionally. Set to 0 to perform calibration periodically 95 regardless of temperature change. 96 97config CLOCK_CONTROL_NRF_CALIBRATION_TEMP_DIFF 98 int "Temperature change triggering calibration (in 0.25 degree units)" 99 default 2 100 help 101 Calibration is triggered if the temperature has changed by at least 102 this amount since the last calibration. 103 104config CLOCK_CONTROL_NRF_CALIBRATION_DEBUG 105 bool "Calibration instrumentation" 106 help 107 Enables retrieving debug information like number of performed or 108 skipped calibrations. 109 110config CLOCK_CONTROL_NRF_USES_TEMP_SENSOR 111 bool 112 depends on HAS_HW_NRF_TEMP 113 default y if CLOCK_CONTROL_NRF_CALIBRATION_MAX_SKIP > 0 && \ 114 CLOCK_CONTROL_NRF_CALIBRATION_TEMP_DIFF > 0 115 select TEMP_NRF5 116 select SENSOR 117 118endif # CLOCK_CONTROL_NRF_K32SRC_RC_CALIBRATION 119 120choice CLOCK_CONTROL_NRF_ACCURACY_PPM 121 prompt "32KHz clock accuracy" 122 default CLOCK_CONTROL_NRF_K32SRC_500PPM if CLOCK_CONTROL_NRF_K32SRC_RC 123 default CLOCK_CONTROL_NRF_K32SRC_50PPM 124 125config CLOCK_CONTROL_NRF_K32SRC_500PPM 126 bool "251 ppm to 500 ppm" 127 128config CLOCK_CONTROL_NRF_K32SRC_250PPM 129 bool "151 ppm to 250 ppm" 130 131config CLOCK_CONTROL_NRF_K32SRC_150PPM 132 bool "101 ppm to 150 ppm" 133 134config CLOCK_CONTROL_NRF_K32SRC_100PPM 135 bool "76 ppm to 100 ppm" 136 137config CLOCK_CONTROL_NRF_K32SRC_75PPM 138 bool "51 ppm to 75 ppm" 139 140config CLOCK_CONTROL_NRF_K32SRC_50PPM 141 bool "31 ppm to 50 ppm" 142 143config CLOCK_CONTROL_NRF_K32SRC_30PPM 144 bool "21 ppm to 30 ppm" 145 146config CLOCK_CONTROL_NRF_K32SRC_20PPM 147 bool "0 ppm to 20 ppm" 148 149endchoice 150 151config CLOCK_CONTROL_NRF_ACCURACY 152 int 153 default 500 if CLOCK_CONTROL_NRF_K32SRC_500PPM 154 default 250 if CLOCK_CONTROL_NRF_K32SRC_250PPM 155 default 150 if CLOCK_CONTROL_NRF_K32SRC_150PPM 156 default 100 if CLOCK_CONTROL_NRF_K32SRC_100PPM 157 default 75 if CLOCK_CONTROL_NRF_K32SRC_75PPM 158 default 50 if CLOCK_CONTROL_NRF_K32SRC_50PPM 159 default 30 if CLOCK_CONTROL_NRF_K32SRC_30PPM 160 default 20 if CLOCK_CONTROL_NRF_K32SRC_20PPM 161 162endif # CLOCK_CONTROL_NRF 163
